Main Entry:

¹sub·sid·i·ary

Pronunciation:

\səb-ˈsi-dē-ˌer-ē, -ˈsi-də-rē\

Function:

adjective

Etymology:

Latin subsidiarius, from subsidium reserve troops

Date:

1543

1 a: furnishing aid or support : auxiliary <subsidiary details> b: of secondary importance <a subsidiary stream>2: of, relating to, or constituting a subsidy <a subsidiary payment to an ally>

— sub·sid·i·ari·ly \-ˌsi-dē-ˈer-ə-lē\ adverb